C22.1-12 - Canadian electrical code, part I (22nd edition), safety standard for electrical installations

This twenty-second edition of the Canadian Electrical Code, Part I, was approved by the Committee on the Canadian Electrical Code, Part I, and by the Regulatory Authority Committee at their June 2011 meetings in Victoria, British Columbia. This twenty-second edition supersedes the previous editions, published in 2009, 2006, 2002, 1998, 1994, 1990, 1986, 1982, 1978, 1975, 1972, 1969, 1966, 1962, 1958, 1953, 1947, 1939, 1935, 1930, and 1927. A new Section 64 was added to cover requirements for renewable energy systems and major updates have been made to Section 50 "Solar photovoltaic systems". Several new conductor types and wiring methods have been recognized and there are significant changes in the Rules and Tables governing ampacity calculations. Grounding and bonding requirements have been revised and new requirements have been added for tamper resistant receptacles and receptacles exposed to the weather. In several sections, rules were added or revised to recognize electric vehicle charging infrastructure. Substantial changes have also been made to requirements for hazardous locations and electric heating.